中国梨木虱是梨树上的主要害虫,其发生面积广,危害重、造成损失严重,在防治上,由于防治不及时,抓不住防治的关键时期,且梨木虱对大多数常用农药又产生了抗药性,再加上梨木虱若虫具有分泌粘液的特性等,虽然喷药多次,但不能控制梨木虱的危害,使大片梨园造成早期落叶,直接影响了梨树的生长发育和果品质量,控制此虫的危 Pear is one of the major pests in pear trees in China. Its occurrence area is wide and serious, causing serious losses. In the prevention and control of pests, Pear’s psyllids are the key period for prevention and treatment. In addition, the pest of pear lice nymphs have the characteristics of mucus secretion, etc. Although spraying many times, it can not control the harm of pear psylla, causing large deciduous pear orchard to cause early deciduous, which directly affects the growth and fruit quality of pear tree, Control the danger of this insect